BMW Internal Engine Parts for BMW E30 M3 S14 2.3L

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Rebuilding your engine or giving your cylinder head an overhaul? Internal engine components covers parts that are located within the engine block and cylinder head. Examples include: timing chains and tensioners, rocker arms, rod bolts and studs, head bolts, valve springs, connecting rods, and more. These are Genuine BMW engine parts, performance upgrades, or approved aftermarket brands that have a long track record of reliability and quality.

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Genuine BMW - Corporate Logo
T#:281
Part#: 11341315912
In Stock
Sale - Save 7% $ 39.85

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 37.25 USD
Free Shipping on orders $49 and up
Sale - Save 7%
$ 39.85

This product was last offered at the strikethrough price on
07-15-2026

$ 37.25 USD
Free Shipping on orders $49 and up

These Motorsport valve springs are from the Sport Evo 3 model but can be used in all E30 M3s (and others). We found that the stock original valve springs can be too weak when used with upgraded cams and this genuine BMW Motorsport part is an upgrade over the original design. Valve springs also get weaker over time so these are the perfect replacement when refreshing the S14 cylinder head. A weak spring can lead to a burnt valve seat or even a bent valve. These are also the stock springs in the M88/S38 and Euro S50B30.

Priced per valve (price includes 1 inner and 1 outer).

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Genuine BMW - Corporate Logo
T#:22231
Part#: 11241310517
In Stock
3% off MSRP $ 72.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 70.99 USD
Free Shipping on orders $49 and up
3% off MSRP
$ 72.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 70.99 USD
Free Shipping on orders $49 and up


Genuine BMW Bearing Shell Yellow - 47,750Mm(+0,25)
This item fits the following BMW Chassis:
E30 M3,E34 M5,E30,E34

Fits BMW Engines including:
S14,S38

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Genuine BMW - Corporate Logo
T#:16410
Part#: 83300490942
Ships in 1-2 days
$ 38.99 USD
Free Shipping on orders $49 and up
GENUINE BMW TEMPLATE

Genuine BMW - Corporate Logo
T#:393128
Part#: 11241310515
Ships in 1-2 days
1% off MSRP $ 73.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 72.99 USD
Free Shipping
1% off MSRP
$ 73.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 72.99 USD
Free Shipping

Wiseco - Corporate Logo
T#:26538305
Part#: 9400XX
In Stock
$ 31.99

This product was last offered at the strikethrough price on
05-03-2026

$ 30.99 USD
Limited Qty Sale
Free Shipping
$ 31.99

This product was last offered at the strikethrough price on
05-03-2026

$ 30.99 USD
Limited Qty Sale
Free Shipping
Wiseco - Corporate Logo
T#:339073
Part#: WISECO2.5
Ships on Oct 13, 2026
Starting at $ 699.80 USD
Free Shipping
Starting at $ 699.80 USD
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The TMS/Wiseco 11.25:1 piston set was designed for use with the Evo3 2.5 liter crank and 2.3 connectig rods. The pistons are 95mm bore. Each set comes with rings, wrist pins and clips. Now also available in a +.25mm Overbore!

For seventy five years, Wiseco has been the piston of choice when it’s time to replace engine internals. To this day Wisco is one of the sole manufacturers of forged pistons within the United States and continues develop new and exciting products everyday.

Piston Specs:
Comp Height = 1.200
Bore Size = 3.7400 (as measured on piston skirt, 1.3" below oil ring)
Suggested Clearance = .0040
Weight = 388-389g (varies piston to piston)
Valve Pocket Dia. = 1.60 (i) / 1.40 (e)
Valve Pocket Angle = 18 (i) / 19.50 (e)
Depth from TE = -.1050 (i) / -.1350 (e)

This item fits the following BMWs:
1987-1991 E30 BMW M3 with Turner 2.5 Kit
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Genuine BMW - Corporate Logo
T#:12915
Part#: 11210666100
Ships in 1-2 days
3% off MSRP $ 65.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 63.99 USD
Free Shipping on orders $49 and up
3% off MSRP
$ 65.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 63.99 USD
Free Shipping on orders $49 and up
GUIDE-BEARING SHELL RED:H11240


Fits BMW Engines including:
M10,S14

Genuine BMW - Corporate Logo
T#:182
Part#: 11211308467
Ships in 1-2 days
3% off MSRP $ 197.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 192.99 USD
Free Shipping on orders $49 and up
3% off MSRP
$ 197.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 192.99 USD
Free Shipping on orders $49 and up
E30 M3 Crank Gear. Typically replaced when it is worn due to timing chain slop. We recommend changing this when performing an engine rebuild.

Genuine BMW - Corporate Logo
T#:284
Part#: 11241307140KIT
Ships in 1-2 days
$ 159.92 USD
Free Shipping
$ 159.92 USD
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The E30 M3 Rod Bolt Set includes 8 bolts.

Genuine BMW - Corporate Logo
T#:283
Part#: TMS283
Ships in 1-2 days
$ 259.99 USD
Free Shipping
$ 259.99 USD
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The E30 M3 Head Bolt Set includes 10 head bolts.

When doing any sort of repair or maintenance there is no replacement for genuine factory parts. Turner Motorsport carries the Genuine BMW brand with pride and has the parts you need to complete your next project with confidence.
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Wiseco - Corporate Logo
T#:387797
Part#: TEN300623SKT
Ships on Oct 14, 2026
$ 699.00 USD
Free Shipping
$ 699.00 USD
Free Shipping
Wiseco BMW E30 M3 Piston set - 3.720" bore. Wiseco leads the performance aftermarket by producing the highest quality forged pistons. Extreme racing conditions demand the strength and toughness that only forged pistons can offer. Compared to cast pistons, forgings are tougher and more durable and will stand up to the abuse that high-performance motorsport applications require. Each set comes with rings, wrist pins, and clips. Born over 80 years ago from the passion for racing, Wiseco is a world leader in manufacturing high-performance, forged pistons for the motorcycle, automotive, ATV, snowmobile, personal watercraft, and outboard marine markets. The Wiseco crew shares the same level of dedication to motorsports as their customers and are focused on continually refining the quality and practices it takes to exceed expectations. Engineered, forged, and machined on cutting-edge equipment in the U.S. at Wiseco’s Mentor, Ohio manufacturing facility, Wiseco pistons are the undisputed leader in quality and performance. Wiseco Performance Products, built for racers, by racers. Bore Diameter - 94.50 Compression Height - 32.00 Forging Type - Full Round Oil Ring Thickness2.8 Piston Material - 2618 Piston Pin Included - Yes Piston Pin Material - 9310 Piston Volume - -32.00 Product Series - European Product Types - Piston Kits Ringset Included - Yes Second Compression Ring Thickness - 1.2 Skirt Coating - Y Top Compression Ring Thickness - 1.0 Wrist Pin Diameter - 0.866 Wrist Pin Style - Floating This item fits the following BMWs: 1988-1991 E30 BMW M3 2.3 liter
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Genuine BMW - Corporate Logo
T#:22167
Part#: 11121312096
Ships in 1-2 days
$ 10.99 USD
Free Shipping on orders $49 and up


Genuine BMW Stud Bolt - M6X35
This item fits the following BMW Chassis:
E30 M3,E34 M5,E30,E34

Fits BMW Engines including:
S14,S38

Genuine BMW - Corporate Logo
T#:19606
Part#: 07129908134
Ships in 1-2 days
$ 5.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 4.00 USD
Free Shipping on orders $49 and up
$ 4.00 USD
Free Shipping on orders $49 and up


Genuine BMW Stud Bolt -
This item fits the following BMW Chassis:
E30,E34

Genuine BMW - Corporate Logo
T#:6817
Part#: 11421271320
Ships in 1-2 days
9% off MSRP $ 10.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 9.99 USD
Free Shipping on orders $49 and up
9% off MSRP
$ 10.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 9.99 USD
Free Shipping on orders $49 and up


Genuine BMW Piston

This item fits the following BMW Chassis:
E30 M3,E34 M5,E30,E34

Fits BMW Engines including:
M10,M20,M30,S14,S38


Genuine BMW - Corporate Logo
T#:367629
Part#: 11341309343
Ships in 1-2 days
3% off MSRP $ 159.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 155.99 USD
Free Shipping
3% off MSRP
$ 159.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 155.99 USD
Free Shipping

Wiseco - Corporate Logo
T#:2380
Part#: TEN300623S
Special Order: No Guaranteed ETA
$ 726.99 USD
Free Shipping
$ 726.99 USD
Free Shipping
Wiseco BMW E30 M3 Piston set - 3.720" bore. Wiseco leads the performance aftermarket by producing the highest quality forged pistons. Extreme racing conditions demand the strength and toughness that only forged pistons can offer. Compared to cast pistons, forgings are tougher and more durable and will stand up to the abuse that high-performance motorsport applications require. Each set comes with rings, wrist pins, and clips. Born over 80 years ago from the passion for racing, Wiseco is a world leader in manufacturing high-performance, forged pistons for the motorcycle, automotive, ATV, snowmobile, personal watercraft, and outboard marine markets. The Wiseco crew shares the same level of dedication to motorsports as their customers and are focused on continually refining the quality and practices it takes to exceed expectations. Engineered, forged, and machined on cutting-edge equipment in the U.S. at Wiseco’s Mentor, Ohio manufacturing facility, Wiseco pistons are the undisputed leader in quality and performance. Wiseco Performance Products, built for racers, by racers. Bore Diameter - 94.50 Compression Height - 32.00 Forging Type - Full Round Oil Ring Thickness2.8 Piston Material - 2618 Piston Pin Included - Yes Piston Pin Material - 9310 Piston Volume - -32.00 Product Series - European Product Types - Piston Kits Ringset Included - Yes Second Compression Ring Thickness - 1.2 Skirt Coating - Y Top Compression Ring Thickness - 1.0 Wrist Pin Diameter - 0.866 Wrist Pin Style - Floating This item fits the following BMWs: 1988-1991 E30 BMW M3 2.3 liter
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Genuine BMW - Corporate Logo
T#:34345
Part#: 11341308158
Back Ordered
$ 131.99 USD
Free Shipping
$ 131.99 USD
Free Shipping


Genuine BMW Cam Follower
This item fits the following BMW Chassis:
E30 M3,E34 M5,E30,E34

Fits BMW Engines including:
S14,S38